Snakes And Evolution

As snakes become what they are today

Snakes are on this planet for millions of years, and perhaps the most suitable reptiles. We do not really know much about how they do over the years (their skeletons are very vulnerable, so fossils are limited) developed, but it probably originated in the time of the dinosaurs, and the descent both ancestors of lizards. One of the oldest snake skeleton was found in the Sahara Desert, dating, there are 130 million years old.

Ancestors of aquatic snake was probably at first, but if it has the advantage of their eggs can on the ground, which allows them to survive on earth are laid makes. Dig method to be caused for millions of years, and that's probably when they lost their legs and outer ear, which makes them well suited for digging. Her eyes were of a clear standard that replaced to protect during the excavations. However, some biologists believe that this, while it is still happening in the water, so there is some controversy about it.

Million years later, some of these things come to the surface, and the snake, as we know it today, was born. These snakes were in the boas, pythons and boas group today, now the most primitive living snake snakes. In fact, called pythons rest of the hind legs, spurs, the. Basis of their tail The boidaes have no poison, but use constriction to kill their prey.

There are 40 million years have shown that small snakes have evolved and adapted to new areas and new features and colubrid, the group is the largest group of snake now closed. Some snakes are snakes, which are called "new world" snakes. A member of this family is the corn snake!

Initially, the snake through the world Boidae snakes were not dominated the field to support the much larger python and boa. So the world has changed dramatically, the temperature is cooler, which was greatly reduced the number of boidaes. They could not in cooler temperatures, the snakes, large large areas because they could survive tolerant than boidaes temperature and climate.

The boidaes (Python and Boa) were now limited parts of the world, with high temperatures, while the snakes were able to survive almost anywhere. Not surprisingly, the number of snakes increased significantly, and they spread all over the world.

Over time, some colubrids molars developed. At the rear fangs snakes, their fangs in the back of the mouth, through which the poison is not as the only weapon against the victim is thought, but rather as an instrument besides shrinking. Many people snakes as pets (eg snake snout and gardeners) are fanged, because it is rare that you get lethal injection of them, you would have to go all the way into the mouth of the snake inject hand.

To clear in the case of a misunderstanding corn snake only (and the milk snake and the snake king) are not fangs behind. You have no poison at all.

This site is a corn snakes and ball pythons, but I'm a little information about how snakes developed, that are to be used as a reference.

After a series of colubrids molars developed, created another group that was not

screamed-Elapids. I must say, snakes mamba clear that the group used. Their venom as their primary means of defense and attack the short elapids have fangs in the upper jaw, which can inject venom, and the teeth are hollow and gets his poison poison gland in the cheek of the pipe. The elapids inject much more effective than the back teeth poisonous snakes. Other members of this group are cobras, sea snakes, vipers and a large class. Your teeth is actually what distinguishes this group of snakes, because they are very similar otherwise.

Snakes have developed even further, there are a few million years ago, the group began to develop vipers. Your defenses are much longer than the elapids. The group gets its name because most snakes are ovoviviparous, giving birth, baby (no eggs) live. Latin "in vivo" = "I am" and "pario" = "I give birth." Rattlesnake, snake probably the most "advanced" life today, from snakes to go to the UN dander, after he can use his tail to warn predators.